> For the complete documentation index, see [llms.txt](https://docs.cascade.io/cascade/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cascade.io/cascade/tools/data_science/varimportance.md).

# Correlate

Correlate calculates the correlation between selected columns of the input table, using either a standard correlation or a Predictive Power Score methodology.

### Options

| Option         | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| -------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Score Type** | <p>Methodology for calculating correlation.</p><ul><li><strong>Correlation</strong>: standard correlation matrix.</li><li><strong>Predictive Power Score</strong>: a methodology for identifying the relationship between non-symmetrical metrics. For example: a city is not necessarily predictive of zip code, but zip code is predictive of city. PPS will identify that relationship while correlation will not. More information <a href="https://www.sr-sv.com/the-predictive-power-score/#:~:text=%E2%80%9CThe%20predictive%20power%20score%20is,(perfect%20predictive%20power).%E2%80%9D&#x26;text=%5BIt%5D%20detects%20linear%20and%20non%2Dlinear%20relationships.">here</a>.</li></ul> |
| **Fields**     | Columns from the input table to include in the matrix.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |